House electbic and masj



C. AALBORGA PERCOLATING APPARATUS.

APPUCATION FILED FEB. 17, 1913.

Patented Aug. 8, 1916.

INVENTOR WITNESSES:

ATTORNEY perature of the isolated body of liquid in the cylinder 8. A portion of said liquid is flashed into steam, filling the chamber 9 and exerting pressure on the body of liquid to force a portion of the same up through the tube 13.. In addition, the familiar method of percolation-the projection of liquid up the tube 13 along with the steam-occurs. The rapidly moving liquid passing the openings i l in the wall of the tube 13 draws a portion of the outer liquid through said openings and up the tube, according to the Well-known ejector principle. The consequent decrease of pressure in the cylinder 8 permits the outer pressure to open the valve 10 ior'an instant, when more liquid flows in, pressures become equalized, and the valve 10 drops back to its seat 11. As is understood, the above process recurs at frequent intervals throughout the time that electric energy is supplied to the heater.

In the modification of my invention shown in Fig. 2, the sole difference from the percolating element already described, resides in the construction of the lower end of the cylinder 8, which has a threaded opening 24 therein adapted to, engage a threaded base 25 provided with a small concentrically disposed open tube 26 extending up within the fountain tube 13 and having a mouth 27 located a short distance above the holes 14:. The device operates similarly to the one hereinbefore described except for the method of admission of the liquid, which is as follows: While the body of liquid in the cylinder 8 is being heated, the level of the liquid in the fountain tube 13 is above the mouth 27 of the small tube 26 and no inward flow occurs. However, when a body of liquid is projected up the tube by the expansion of the steam in the chamber 9 the pressure at the mouth 27 is decreased and'a portion of the outer liquid flows in, the action being aided by the aspirating effect of the upwardly-projected body.

Those skilled in the art will readily understand that my invention is not restricted to the specific structural details and arrangement of parts herein shown and described, and it is evident that many modifications may be effected therein without departing from the spirit and scope of my invention.

1 claim as my invention:

1. A heating apparatus embodying a well for containing liquid, means for heating said liquid, a tube extending into said well, means near the lower end of the said well for ad- .mitting the liquid thereto, and means for v limiting the height of said liquid therein.

2. A heating apparatus embodying a centrally-disposed well for containing liquid, means for heating said liquid, a fountain tube of relatively small diameter extending into said well, means near the lower end of the said well for intermittently admitting liquid thereto, and means for limiting the height of said liquid in a portion of said well.

3.- A heating apparatus embodying a centrally-disposed well for containing liquid, means for heating said liquid, a fountain tube of relatively small diameter extending into said well andnearly to the bottom thereof and dividing the well into an inner and an outer chamber, one of Which--l1as a closed end, means near the lower end of the said well for intermittently admitting the liquid thereto, and means for limiting the height of said liquid in the closed chamber.

i. A heating apparatus embodying a well for containing liquid, means for heating said liquid, a tube of relatively small diam eter extending into said well for dividing the well into an upper steam compressionchamber and a lower liquid-containing chamber.

5. A heating apparatus embodying a well for containing liquid, means for heating said liquid, a fountain tube of relatively small diameterextending into said well and having an opening near the lower end there of, said tube serving to divide said well into a steam-compression chamber above said opening and a liquid-containing chamber below the same.

6. An electric heater adapted for immersion in a liquid and comprising a body member of relatively good heat-conducting material, a centrally-disposed hollow member in engagement therewith, a fountain tube extending nearly to the bottom of said hollow member, means for heating the said body member, and heat insulating means partially surrounding the same 7. An electric heater adapted for immersion in a liquid and comprising a body member of relatively good heat-conducting material, a centrally-disposed upright cylindrical member in intimate contact therewith, a fountain tube extending through the upper end of said cylindrical member and nearly to the lower end thereof, means for heating the said body member, and atiheat-insulating medium surrounding a portion thereof.

8. An electric heater adapted for immersion in a liquid and comprising a body member of relatively good heat-conducting material having a central opening a hollow upright cylindrical member of similar material fitting tightly within said opening and having a closed upper end, a fountain tube extendin through said upper end and nearly to the ower end thereof to form an annular chamber, and a heating element intimately associated with said body member andsurrounding said cylindrical member, said body mem er being surrounded by a heat-insulating body of air.

9. In a percolator, the combination with a body member of good heat-conducting material, and a heater element associated therewith, of a centrally disposed hollow member in engagement with said body member, a fountain tube extending nearly to the bottom of hollow member, and means for intermittently opening and closing access thereto.

10, In a percolator, the combination. with a body member of good heat-conducting ma terial and a heater element associated there with, of a centrally disposed hollow cylin drical member in intimate contact with said body member, a fountain be extending through the upper end of d cylindrical member and nearly to the or end thereoii, and for opening closing the ac cess thereto.

11. in a percolator element adapted for immersion in a liquid, the combination with a body member of good hcaiwonducting ma terial having a central opening, and a heater element intimately associated with said member, of a hollow upright cylinder of good heat-conducting material fitting tightly within said opening and having a closed upper end, a fountain tube extending through said upper end and nearly to the lower end of said cylinder to form an annular chamber, and means adapted to permit one-way flow of liquid to said cylinder.

12. In a percolator element adapted for immersion in a liquid, the combination with a body member of good heat-conducting ma terial having a central opening, and a heater element intimately associated with said member, of a hollow upright cylinder oi good heat-conducting material having the lower portion thereof fitting tightly within said openin and provided with a closed upper end, a 'ountain tube extending through said upper end and nearly to the lower end of said cylinder and provided with a side openin in its lower portion, and means centrally isposed in the lower end of said cyl inder for controlling the admission of liquid thereto.

13. In a percolator element adapted for immersion in a liquid, the combinatmn with a body member of good heat-conducting terial having a central opening, and a heater element intimately associated with said member, of a hollow upright cylinder of good heat-conducting material having the lower portion thereof fitting tightly within said opening, a cap closing the upper end of said cylinder, a fountain tube extending through said capand nearly to the lower end of said cylinder and provided with a side opening in its lower portion, and liquid admitting means centrally located in the lower end thereof.

14, In a percolator, the combination with a body member of good heat-conducting material, of a fountain tube concentrically disposed in said body ,member, and a valve in its lower mechanism located centrally in the lower side of said body member.

15, In a percolator, the combination with a body member of good heat-conducting material, of a hollow member centrally disposed within said body member and having a bottom wall provided with an opening, a fountain tube extending within said hollow member, and a check valve mechanism located centrally in said bottom wall and adapted to selectively cover or uncover said opening therein.

l6, Li a percolator element for immersion in a liquid, the combination with body member of good heat-conducting ma terial, of a hollow'upright cylindrical member concentrically located within said body member and having a bottom wall provided with an opening, a fountain tube extending within said cylindrical member, and an entrance check valve mechanism located cert trally in said bottom wall and dependent for action upon the relative pressures of the liquid outside and inside the cylindrical member.

17., In a percolator element adapted for immersion in a liquid, the combination with means for heating said element, of a centrally-disposed hollow member intimately associated with said heating means, a fountain tube provided with a side opening in its lower portion and extending through the upper end of said hollow member and nearly to the lower end thereof to form a closed annular chamber, and a valve mechanism located centrally in the lower end of said hollow member.

18., In a percolator element adapted for immersion in a liquid, the combination with means for heating said element, of a hollow upright cylinder of good heat-conduct ing material having the lower portion there of intimately associated with said heating means, a cap closing the upper end of said cylinder, a fountain tube extending through said cap and nearly to the lower end of said cylinder and provided with a side opening ortion and liquid admitting means central y located in the lower end of said cylinder and dependent for action upon the pressure of the liquid.

19. An electric heater adapted for immersion in a liquid and comprising a body member of relatively ood heat-conducting material, a centrally-disposed hollow memher in engagement therewith, a fountain tube having a side opening in its lower portion and extending nearly to the bottom of said hollow member, means for heating the said body member, and heat-insulating material V artially surrounding the same.

20. n a percolator, the combination with a body member of good heat-conducting material and a heater. element associated therewith, of a centrally-disposed hollow member in engagement with said body member, a fountain tube having a side opening in its lower portion and extending nearly to the bottom of said hollow member, and means for intermittently opening or closing access thereto.

21. In a percolator, the combination with a body member of good heat-conducting material, of a fountain tube concentrically disposed in said body member and having a side opening in its lower portion, and a valve mechanism located centrally in the lower side of said body member.

22. In a percolator element adapted for immersion in a liquid, the combination with a body member of good heat-conducting material, of a hollow, upright, cylindrical mem ber concentrically located Within said body member and having a bottom wall provided with an opening, a fountain tube having an opening in the lower portion of the wall thereof: and extending within said cylindrical member, and liquid admitting means centrally located in said bottom wall and dependent for action upon the relative pressure of the liquid outside and inside said cylindrical member.

23. In a percolator element adapted for immersion in a liquid, the combination with means for heating the same, of abody member having a central opening and comprismeans for heating the same, of a body member having a central 0 ening comprising a plurality of superpose circular plates and a ring adapted to fit closely over the ed es of said plates, a hollow upright cylin er having the lower portion thereof fitting tightly within said opening, a cap closing the upper end of said cylinder, a fountain tube extending through said cap and nearly to the lower end'of said cylinder and provided with a side opening in its lower portion, and means for admitting liquid to said cylinder.

In testimony whereof, I have hereunto subscribed my name this 7th day of Feb.

CHRISTIAN AALBORG. Witnesses:

ALVA Gr. Como, B. B. HINES. 

